Frank cross



(No Model.) Y

F. CROSS.

*BURGrLAR ALARM.

Patented June 9 wf/won ireA A'rns,N

Yafinar 'tripa FRANK CROSS, OF WASHINGTON, INDIANA.

BUReLAR-ALARM.

SPECIFICATION forming part of-LettersPatent No. 319,566, dated .Tune 9, 1835.

Application filed October 15, 1884.

To all whom it may concern,.-

Beit known that I, FRANK Cnoss, acitizen of the United States, residing at Washington, in the county of Daviess and State of Indiana, have invented a new and useful Improvement in Burglar-Alarms, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to burglar-alarms; and it consists in the construction and novel arrangement of parts, as will be hereinafter fully described, and particularly pointed out in the claims.

In the drawings, Figure lis a front elevation of my improved burglar-alarm. Fig. 2 is a vertical section. Fig. 3 is a horizontal sectional view on the line x m in Fig. l, and Fig. 4 is a detailed view thereof.

Referring by letter to the accompanying drawings, A designates the alarm-case, which is provided with a door,B,having awindow,G. XVithin the alarm-case A, I provide gearing consisting, preferably, of a drive -wheel, D, driven by a coil-spring, E. The drive-Wheel engages a pinion on a shaft, F,Vwhich latter shaft is also provided with a spur gear-wheel, G, which engages a pinion, H, on a shaft, H. The shaft II is also provided with an escapement-wheel, I, which engages the lever I', provided with the bell-hammer'J. A small callbell, H2, at the bottom of the alarm-case is provided, upon which the hammer J strikes when the gearing is operated. Above the gearing at the rear of the case A is a cross-strip, K, which forms a bearing for the rear ends of the shafts L L, the front bearings of said shafts L Ll being in blocks or hangers L2 L2. The shafts L L are provided with any desired number of cogwheels Z. Two are shown on each shaft. At their front ends the shaftsL L are provided with miter-wheels M M. At the rear end of the shaft L is a cam-wheel, L2, on which is placed an antilfrietion roller, a, that is journaled on the horizontal bent upper end of a Wire rod, Z), that slides vertically in guides 0 and the lower Yend of which wire rod passes through an eye, I2, that is formed in the end of an arm that extends from the bell-lever I.

N designates the indicating-cylinder, which in this instance has four faces, on each of which is printed or painted the name of one of the outer buildings surrounding the residence. The

` the indicatingcylinder to rotate once.

(No model.)

indicatingecylinder N is provided on its ends with bevel gear-wheels N N2,which engage the miter-wheels M M/ on the front ends of the shafts L L', so that when either shaft is turned the indieatingcylinder N will be operated. The sides of the alarm-ease A are provided with plates O, having rectangular openings O', through which the slides P I P2 Ili pass. The wires for operating the slides are connected to the slides and to the door of the building, and may be run under ground or on poles, as may be desired.

R represents rack-bars that are secured on the under sides of the slides P P P2 P3, and when the slides are drawn out mesh with the cog-wheels Z, and to each of the slides is secured a stop, S, whieh,when the slide is drawn out, strikes against the inner side of the box and prevents the slide from being drawn out .farther. These stops are arranged on the slides out of line with each other, as shown, so that no two of the slides can be moved the same distance. When the slidel? is moved, it goes far enough to cause the indicating-cylinder N to, make a quarter-revolution. The slide I can move far enough to cause the indicating cylinder to make a half-revolution, the slide P2 can movefar enough to cause the indicating-cylinder to move three-quarters around, and the slide l?3 can move far enough to cause Each of the slides is connected by a wire to a door or window, and when said door or window 1s opened the movement of the slide causes the indicating-cylinder to present its correspondinglyvinscribed face to the opening in the ease, the cam-wheel L3 raises the wire rod b, so as to disengage the rod from the eye of the belllever, and the striking alarm mechanism is thereby set in operation, as will be very readily understood.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent of the United States, isd

l. The combination ofthe inclosing-case having an opening in one of its sides with the revolving indicating-cylinder journaled in the case behind the opening, the shafts journaled in the case, having spur-wheels and gearing connecting said shafts with the revolving in- IOO dicating-cylinder, and the slides having rackbars that mesh with the spurwheels on the shafts, and stops for limiting the movement of the slides, substantially as described.

2. The combination ofthe inelosing-case having an opening in one of its sides with the revolving indicating-cylinder j ournaled in the case behind the opening, the shafts journaled in the case, having spur-Wheels and gearing connecting said shafts with the revolving indieating-cylinder, the slides having rack-bars that mesh with the spur-Wheels onthe shafts, stops for limiting the movement of the shafts, the gong, the striking mechanism, and the trip-rod for releasing the striking mechanism, and the cam on one of the shafts for raising the rod, substantially as described.

3. The combination of the inclosiug case FRANK CROSS.

Witnesses JAMES C. LAVELLE, ALLEX. OHIMEL. 

